jetting my 400ex

[garett]

hello im kinda new to this chat deal ,but anyway i live in IL i have a 2003 400ex e series slip on with kn air filter n outerwear i have a moose jet kit i need to find out the proper jetting . seems to not be right please help!!!!!!

[Woodsrider]

I am not to sure about the sizing of the Moose jets, but a Keihen 155 MJ and a 42 pilot should be just about spot on.

[Woodsrider]

Oh and welcome to EXriders:D

[JOEX]

Yeah, what he said......both times......:p

I belive Moose jets and Dyno jets are the same. What do you have in there right now and what not seems right?

Joe

[garett]

i dont knopw what they put in to be honest he said he did what the kit told him stage 2 jetting removed air box lid also which im kinda nervous about but its also 7 degrees out so its hard to tell if it is right also ty for the help guys id like to meet some new riders my buddys all have quads one has a bad as hell honda pilot is much fun to ride tonight the news is going to the track to get some coverage . the track is lettin people in for free to help us get more tracks .

[Woodsrider]

Is it backfiring ar popping on decel, or is it cutting out or blubbing? where is the problem occuring, 1/8 to 3/4 throttle, or w/o?

[cals400ex]

its hard to tell without knowing the symptoms but here is a starting point:

155 mainjet
42 pilot jet
2 turns out from lightly seated on the fuel skrew
i am not positive where to set the clip at on the needle because i have not used a jet kit needle. however, i have been told that the clip in the 3rd position from the top seems to work good.

good luck

[garett]

ty guys ill try that